Dual Sensing Smart Battery Isolator 12V 200A - REDARC

★★★★★ 4.3 49 reviews

$385.00
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$385.00
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Free shipping Free 30-day returns

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Product details

Management number 235461083 Release Date 2026/07/02 List Price $134.75 Model Number 235461083
Category

The REDARC Smart Start® SBI212D is a 12v 200A dual battery isolator used in a dual battery system. It is designed to protect the start battery from excessive discharge while allowing the auxiliary battery to supply non-essential loads. 

The REDARC Smart Start® SBI212D is a microprocessor-controlled dual battery isolator used in a dual battery system. It is designed to be used as a solenoid priority system to protect the start battery from excessive discharge while allowing the auxiliary battery to supply non-essential loads. And its compact size makes it easy to install.

The SBI212D provides 12 volt DC incorporating 200A of continuous ratings and is designed for extremely heavy-duty operations. This dual sensing model isolates the start and auxiliary battery in a system where the auxiliary battery may be charged by solar panels, an external AC battery charger, or another external source. The SBI212D also allows the start battery to be charged by the external source once the auxiliary battery reaches 13.2V.

It features fault detection and LED indication of operation to warn the user of instances of voltage drop, over-voltage, or excessive current draw conditions. Its components prevent the solenoid from generating high voltage transients, making it better than a diode battery isolator.

The SBI range facilitates additional charge via your vehicle’s alternator. Equipped with full surge protection, the power saving technology of the SBI212D is used primarily in 4WD and commercial vehicles and provides a safe way to charge an auxiliary battery.

Features:

  • Overmold design
  • Compact size and easy installation
  • Silver contacts for longer life and suitable for marine applications
  • Power saving technology
  • Fault indication
  • Fully surge protected

Product Brochure
Instruction Manual

Specs:

Output Voltage 12VDC
Output Current Rating (Cont.) 200A
Input Current (Max.) 200A
Input Fuse Rating 200A
Output Fuse Rating 200A
Length (in) 3.94
Width (in) 3.74
Height (in) 3.54
Warranty 2 Years
Weight (lb) 1.32

California residents: see Proposition 65 information


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